US2004074674A1PendingUtilityA1
Coolant drill head
Priority: Mar 8, 2002Filed: Jun 10, 2003Published: Apr 22, 2004
Est. expiryMar 8, 2022(expired)· nominal 20-yr term from priority
Inventors:Glen E. Thomas
B23B 51/02B23B 2251/02B23Q 1/0018B23B 2240/24B23B 51/06
38
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Claims
Abstract
Coolant hole drills are very costly and by that are times not used as often as they could be. By utilizing a coolant drill head, the material could be cobalt or carbide, the coolant drill costs would be reduced substantially. The problem users encounter with replaceable drill heads is strength and concentricity. Here is a system that maintains both strength and concentricity.
Claims
exact text as granted — not AI-modified1 . In using this system of replaceable drill head, concentricity and durability is achieved by not using side locks or side screws to lock on in holding the head to the drill body, which then causes a concentricity problem and overall weakens the drill.
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